Home / 18,309.82-27,458.23-7,915.90

Finding the Fourth Proportional to 18,309.82, 27,458.23 and 7,915.90

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Solution

The fourth proportional to 18,309.82, 27,458.23 and 7,915.90 is: 11,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.82 : 27,458.23 = 7,915.90 : x
  2. Step 2: Convert to fraction form
    18,309.82/27,458.23 = 7,915.90/x
  3. Step 3: Cross multiply
    18,309.82x = 27,458.23 × 7,915.90
  4. Step 4: Simplify right side
    18,309.82x = 217,356,602.86
  5. Step 5: Solve for x
    x = 217,356,602.86/18,309.82
  6. Step 6: Final answer
    x = 11,871.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.